WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

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A toy car rolls down two identical inclined ramps: Ramp 1 is covered in smooth plastic, while Ramp 2 is covered in coarse sandpaper. Why does the car travel faster and further on Ramp 1?

Ramp 1 has higher gravitational pull than Ramp 2 Sandpaper on Ramp 2 creates greater frictional force, converting kinetic energy into thermal energy Smooth plastic increases the mass of the toy car Ramp 2 eliminates friction entirely

Correct Answer:

Sandpaper on Ramp 2 creates greater frictional force, converting kinetic energy into thermal energy

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